Mulas Antonello, Sbaraglia Simone, Bellodi Andrea, Bitetto Isabella, Carbonara Pierluigi, Carugati Laura, Cau Alessandro, Marongiu Martina Francesca, Pascale Noemi, Porcu Cristina, Zupa Walter, Follesa Maria Cristina
Department of Life and Environmental Sciences - University of Cagliari, Via T. Fiorelli 1, 09126, Cagliari, Italy; CoNISMa Consorzio Nazionale Interuniversitario per le Scienze Mare, Piazzale Flaminio 9, 00196, Rome, Italy.
Department of Economics and Business Sciences - University of Cagliari, Viale Sant'Ignazio, 70, 09123, Cagliari, Italy.
Mar Environ Res. 2022 Dec;182:105766. doi: 10.1016/j.marenvres.2022.105766. Epub 2022 Oct 10.
Effectiveness of restocking programs in Marine Fully Protected Areas' (FPAs) can be highly affected by the movement behavior of the species to protect. We analyzed the data of 744 Palinurus elephas specimens tagged, relocated inside 12 FPAs, established in the seas surrounding Sardinia (central-western Mediterranean), and then recaptured. The overall aims were to characterize the individuals' movements after the relocation and to discuss strengths and weaknesses of the current FPAs' design. Almost 80% of tagged individuals travelled progressively increasing distances, as a function of the release distance, up to a maximum value of 11,500 m. Then, for larger release distances, individuals' mobility appeared reduced and more chaotic. A similar trend was found analyzing the distances travelled with respect to the FPAs with the highest number of recaptured individuals and to the size. These results allow to establish a threshold limit of the release distance, to take into account when designing FPAs, as a useful tool to keep a portion of the individuals into FPAs' borders, in order to both preserve the species and guarantee a spillover of individuals in the commercial areas.
海洋完全保护区（FPA）中增殖放流计划的有效性可能会受到待保护物种移动行为的严重影响。我们分析了744个标记的欧洲龙虾样本的数据，这些样本在撒丁岛（地中海中西部）周边海域设立的12个FPA内被标记、重新安置，随后被重新捕获。总体目标是描述重新安置后个体的移动情况，并讨论当前FPA设计的优缺点。几乎80%的标记个体随着放流距离的增加，移动距离逐渐增大，最大可达11500米。然后，对于更大的放流距离，个体的移动性似乎降低且更加混乱。在分析相对于重新捕获个体数量最多的FPA以及FPA大小的移动距离时，发现了类似的趋势。这些结果有助于确定放流距离的阈值限制，在设计FPA时予以考虑，作为一种有用的工具，将一部分个体留在FPA边界内，以便既保护物种，又保证个体向商业区的溢出。
